642010019

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 786432000

約数和(自身を除く): 144421981

約数列:

[1, 7, 19, 127, 133, 191, 199, 889, 1337, 1393, 2413, 3629, 3781, 16891, 24257, 25273, 25403, 26467, 38009, 169799, 176911, 266063, 460883, 480187, 722171, 3226181, 3361309, 4827143, 5055197, 33790001, 91715717, 642010019]

約数ペア:

[(1, 642010019), (7, 91715717), (19, 33790001), (127, 5055197), (133, 4827143), (191, 3361309), (199, 3226181), (889, 722171), (1337, 480187), (1393, 460883), (2413, 266063), (3629, 176911), (3781, 169799), (16891, 38009), (24257, 26467), (25273, 25403)]